Una partícula nuclear tiene una energía de 108 eV. Un grano de arena tiene una masa de 32 mg. ¿Qué velocidad debe tener el grano de arena para que su energía cinética sea igual a la energía de la partícula nuclear?

Point charges q1=+2.00μc and q2=−2.00μc are placed at adjacent corners of a square for which the length of each side is 1.50 cm . point a is at the center of the square, and point b is at the empty corner closest to q2. take the electric potential to be zero at a distance far from both charges. part a what is the electric potential at point a due to q1 and q2? express your answer with the appropriate units.